A workbench for chip data repair and a use method thereof

By designing a placement and storage mechanism, the problems of inconvenient tool retrieval and loss of small parts on the chip data repair workbench were solved, achieving convenient tool retrieval and safe storage of parts.

CN116638483BActive Publication Date: 2026-06-26CIVIL AVIATION UNIV OF CHINA

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CIVIL AVIATION UNIV OF CHINA
Filing Date
2023-07-11
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The existing chip data repair workbench is not convenient for the handling and storage of tools, resulting in inconvenient operation and the easy loss of small parts.

Method used

A workbench comprising a placement mechanism and a holding mechanism was designed. The placement mechanism enables convenient retrieval and locking of tools through structures such as rotating columns, drive chambers, and slides, while the holding mechanism enables safe storage of small parts through a shielding cloth and roller structure.

Benefits of technology

It enables convenient access to tools and safe storage of small parts, avoiding inconvenience in operation and loss of parts.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the field of chip data repair, in particular to a workbench for chip data repair and a use method thereof, which comprises an operation table, four supporting legs are fixedly connected to the bottom end of the operation table, a placing mechanism is arranged in the inner wall of the operation table, and a containing mechanism is arranged at the top end of the operation table. The workbench for chip data repair is characterized in that the placing mechanism is arranged, when the bottom column in the rotating column is moved downward, the first driving bin and the second driving bin, the sliding groove, the limiting groove and the moving-out groove are arranged, the bottom column is rotated when it is continuously moved downward, the storage box can be opened or locked, the storage box can be conveniently opened, tools can be taken, the containing groove in the interior is opened through the arrangement of the containing mechanism when the storage box is opened, the shielding plate is fixed in the containing bin, the shielding cloth is opened, the containing groove in the interior is opened, workers can conveniently store various small parts, and loss is avoided.
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Description

Technical Field

[0001] This invention relates to the field of chip data repair, specifically to a workbench for chip data repair and a method of using it. Background Technology

[0002] A chip generally refers to a chip that integrates various tiny circuits onto a semiconductor wafer. With the advent and continuous development of computers, the degree of chip integration is a very important indicator. The higher the degree of integration, the higher the processing and storage capacity. As it is an electronic device, when a fault occurs due to voltage or other factors, it may cause damage to the data inside the chip. Therefore, appropriate devices are needed to recover the data from the chip.

[0003] The inventors discovered the following problems in the existing technology that have not been adequately addressed: 1. Data recovery is typically performed on a workbench, but existing devices are inconvenient for staff to access or store tools, and directly piling them on the workbench can hinder operations; 2. Furthermore, the device requires disassembly and chip processing, necessitating the storage of numerous small parts. However, existing devices are not suitable for this purpose, and direct piling can lead to parts loss and inconvenience. Summary of the Invention

[0004] The purpose of this invention is to provide a workbench for chip data repair and a method for using it, so as to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a workbench for chip data repair, including an operating table, with support legs fixedly connected to the four sides of the bottom end of the operating table, a placement mechanism provided in the inner wall of the operating table, and a holding mechanism provided at the top end of the operating table;

[0005] The placement mechanism includes a placement compartment, a base column, a rotating column, and an unfolding component. The placement compartment is located at the top of the operating platform. A first drive compartment is fixedly connected to the bottom wall of the placement compartment. A limiting gear is rotatably connected to the inner wall of the first drive compartment, and an arc-shaped block is inserted into the outer teeth of the limiting gear. The outer wall of the arc-shaped block is elastically connected to the inner wall of the first drive compartment. The bottom end of the base column is fixedly connected to the top end of the limiting gear. A sliding groove is formed in the inner wall of the base column, with one end of the groove connected to a limiting groove and the other end connected to a removal groove. The outer wall of the rotating column is threadedly fitted to the inner wall of the base column. A second drive compartment is rotatably connected to the top end of the rotating column, and a storage compartment is fixedly connected to the top end of the second drive compartment. The unfolding component is movably disposed on the inner wall of the placement compartment.

[0006] Preferably, the chute has a plurality of limiting grooves and removal grooves distributed in a circular array at equal intervals along the chute wall, and the plurality of limiting grooves and removal grooves are staggered at the top of the chute, and the plurality of limiting grooves and removal grooves are all connected to the chute.

[0007] Preferably, the internal structure of the second drive compartment is symmetrical to the internal structure of the first drive compartment, and the arc-shaped orientation of the arc-shaped block in the second drive compartment is opposite to the orientation of the arc-shaped block in the first drive compartment.

[0008] Preferably, slots are provided on both inner walls of the storage compartment, and a sliding rod is inserted into the inner wall of the slot, and a return spring is sleeved on the outer wall of the sliding rod.

[0009] Preferably, the unfolding component includes a limiting block, a shielding plate, and a trigger block. The outer wall of the limiting block is slidably disposed with the inner wall of the placement compartment, and a return spring is fixedly connected to the rear end of the limiting block. The two ends of the shielding plate are hinged to the inner walls of the two sides of the placement compartment. A coil spring is fixedly connected to the axial end of the shielding plate. A locking rod is fixedly connected to the outer wall of the shielding plate. The bottom end of the locking rod has a bevel formed by machining. The outer wall of the trigger block is fixedly connected to the outer wall of the storage compartment, and the side view cross-section of the trigger block is a trapezoidal structure.

[0010] Preferably, the placement mechanism further includes a rotating sleeve, the outer wall of which is rotatably connected to the outer wall of the rotating rod, and a plug block is fixedly connected to the side wall of the rotating sleeve.

[0011] Preferably, the holding mechanism includes a holding chamber and a holding trough. The holding chamber is located at the top of the operating table and is connected to the installation chamber. The inner diameter of the holding chamber matches the outer diameter of the shielding plate. The holding trough is located on the bottom wall of the shielding plate. A roller is horizontally arranged on one side of the holding trough, and both ends of the roller are rotatably connected to the inner wall of the shielding plate. A shielding cloth is wrapped around the outer wall of the roller. An insert is fixedly connected to the front end of the shielding cloth, and the outer wall of the insert is inserted into the outer wall of the shielding cloth.

[0012] A method of using a workbench for chip data repair, characterized by the following steps:

[0013] S1. The staff pushes down the cover plate, causing the cover plate to rotate downwards under force, while simultaneously squeezing the storage compartment in the placement compartment, causing the storage compartment to move downwards. The storage compartment slides downwards through the slide bar, squeezing the return spring.

[0014] S2. Next, as the storage compartment moves downward, the rotating column located below the storage compartment drives the rotating sleeve to move downward, passing through the removal slot into the slide groove. Then, due to the threaded fit between the rotating column and the bottom column, and the symmetrical arrangement of the internal structure of the second drive compartment and the first drive compartment, the rotating column does not rotate itself when it moves downward, but drives the bottom column to rotate, causing the insertion block in the rotating sleeve to slide in the slide groove until it slides to the bottom of the limiting groove. At this time, after the storage compartment is reset by the return spring, the insertion block in the rotating sleeve will insert into the limiting groove, preventing it from rising and performing a locking operation.

[0015] S3. Similarly, when the staff presses the cover plate again, the bottom of the cover plate triggers the storage compartment to move down again. At this time, because several limiting slots and several removal slots are distributed alternately at the top of the slide, the plug-in block on the rotating sleeve moves out of the slot. At this time, the storage compartment is reset and rises by the reset spring, and the plug-in block rises by moving out of the slot until the trigger block on the storage compartment squeezes the limiting block to contract, so that the cover plate and the storage compartment rise and open at the same time.

[0016] S4. Then, because the end of the shielding plate is fixed with a coil spring, the shielding plate will automatically open after the locking of the limiting block is released, until it is rotated and inserted into the holding compartment for placement.

[0017] S5. Finally, manually pull the insert on the shielding cloth to remove it from the outer wall of the shielding plate. At this time, the shielding cloth is collected by rollers, revealing the internal holding slot, which makes it convenient for staff to put various screws and other small parts into it when performing chip operations, so as to avoid loss.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] In this invention, by setting up a placement mechanism, when the rotating column moves downward in the bottom column, the first drive chamber and the second drive chamber, as well as the slide, the limiting groove and the removal groove are set up to rotate the bottom column as it moves downward, so that the storage box can be opened or locked, making it easy to open the storage box and take out the tools.

[0020] In this invention, by setting up a holding mechanism, when the storage box is opened, the shielding plate can be fixed in the holding compartment, the shielding cloth can be opened, and the internal holding slot can be opened, which makes it convenient for staff to store various small parts and avoid loss. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall assembly cross-section of the present invention;

[0022] Figure 2 The schematic diagram of the device body of the present invention is shown in the figure below;

[0023] Figure 3 This is a partial cross-sectional view of the mounting mechanism in this invention;

[0024] Figure 4 This is a cross-sectional view of the holding mechanism in this invention;

[0025] Figure 5 This is a schematic diagram of the chute structure in the present invention;

[0026] Figure 6 This is a schematic cross-sectional view of the first drive compartment in this invention;

[0027] Figure 7 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0028] In the diagram: 1. Operating platform; 2. Support leg; 3. Placement mechanism; 31. Placement compartment; 32. First drive compartment; 33. Base column; 34. Slide groove; 35. Rotating column; 36. Second drive compartment; 37. Storage compartment; 38. Deployment component; 381. Restriction block; 382. Shielding plate; 383. Locking rod; 384. Trigger block; 39. Rotating sleeve; 4. Container mechanism; 41. Container compartment; 42. Container slot; 43. Shielding cloth; 44. Insert block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 7 The present invention provides a technical solution: a workbench for chip data repair, including an operating table 1, with support legs 2 fixedly connected to the four sides of the bottom end of the operating table 1, a placement mechanism 3 provided in the inner wall of the operating table 1, and a holding mechanism 4 provided at the top end of the operating table 1.

[0031] The placement mechanism 3 includes a placement compartment 31, a base column 33, a rotating column 35, and an unfolding component 38. The placement compartment 31 is located at the top of the operating table 1. A first drive compartment 32 is fixedly connected to the bottom wall of the placement compartment 31. A limiting gear is rotatably connected to the inner wall of the first drive compartment 32, and an arc-shaped block is inserted into the outer teeth of the limiting gear. The outer wall of the arc-shaped block is elastically connected to the inner wall of the first drive compartment 32. The bottom end of the base column 33 is fixedly connected to the top end of the limiting gear. A sliding groove 34 is provided in the inner wall of the base column 33. One end of the sliding groove 34 is connected to a limiting groove, and the other end of the sliding groove 34 is connected to a removal groove. The outer wall of the rotating column 35 is threadedly fitted to the inner wall of the bottom column 33. The top of the rotating column 35 is rotatably connected to the second drive chamber 36, and the top of the second drive chamber 36 is fixedly connected to the storage chamber 37. The unfolding member 38 is movably disposed on the inner wall of the placement chamber 31. Through the setting of the placement mechanism 3, when the rotating column 35 moves down in the bottom column 33, the first drive chamber 32 and the second drive chamber 36, as well as the slide 34, the limiting groove and the removal groove are set, the bottom column 33 is rotated as it moves down, so that the storage box can be opened or locked, making it easy to open the storage box and take out the tools.

[0032] In this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, there are several limiting grooves and removal grooves in the slide 34, which are distributed in a circular array at equal intervals along the wall of the slide 34. The limiting grooves and removal grooves are staggered at the top of the slide 34 and are connected to the slide 34. Because the limiting grooves and removal grooves are staggered at the top of the slide 34, the plug-in block on the rotating sleeve 39 moves out of the groove. At this time, the storage compartment 37 is reset and raised by the reset spring, and the plug-in block rises through the removal groove until the trigger block 384 on the storage compartment 37 squeezes the limiting block 381 to retract, thereby causing the shielding plate 382 and the storage compartment 37 to rise and open at the same time.

[0033] In this embodiment, as Figure 3 and Figure 6 As shown, the internal structure of the second drive chamber 36 is symmetrical to the internal structure of the first drive chamber 32, and the arc-shaped block in the second drive chamber 36 is oriented opposite to the arc-shaped block in the first drive chamber 32, so that the second drive chamber 36 and the first drive chamber 32 can rotate in opposite directions, so that when the rotating rod rises, it will not drive the bottom column 33 to rotate and trigger the displacement of the limiting groove and the removal groove.

[0034] In this embodiment, as Figure 1 and Figure 5As shown, slots are provided on both sides of the inner wall of the storage compartment 37, and a sliding rod is inserted into the inner wall of the slot. A return spring is sleeved on the outer wall of the sliding rod to facilitate driving the storage compartment 37 to move and push out.

[0035] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the unfolding component 38 includes a limiting block 381, a shielding plate 382, ​​and a trigger block 384. The outer wall of the limiting block 381 is slidably disposed with the inner wall of the placement compartment 31, and a return spring is fixedly connected to the rear end of the limiting block 381. The two ends of the shielding plate 382 are hinged to the inner walls of the two sides of the placement compartment 31. A coil spring is fixedly connected to the shaft end of the shielding plate 382. A locking rod 383 is fixedly connected to the outer wall of the shielding plate 382. The bottom end of the locking rod 383 has a bevel formed by machining. The outer wall of the trigger block 384 is fixedly connected to the outer wall of the storage compartment 37. The side view of section 4 is a trapezoidal structure. When the staff presses the shielding plate 382 again, the bottom end of the shielding plate 382 triggers the storage compartment 37 to move down. At this time, because several limiting slots and several removal slots are distributed alternately at the top of the slide 34, the plug-in block on the rotating sleeve 39 moves out of the slot. Then the storage compartment 37 is reset and rises by the reset spring, and the plug-in block rises by moving out of the slot until the trigger block 384 on the storage compartment 37 squeezes the limiting block 381 to retract, so that the shielding plate 382 and the storage compartment 37 rise and open at the same time.

[0036] In this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, the placement mechanism 3 also includes a rotating sleeve 39. The outer wall of the rotating sleeve 39 is rotatably connected to the outer wall of the rotating rod, and a plug-in block is fixedly connected to the side wall of the rotating sleeve 39. Since the rotating column 35 and the bottom column 33 are threadedly fitted, and the internal structure of the second drive chamber 36 is symmetrically set with the internal structure of the first drive chamber 32, the rotating column 35 will not rotate when it moves down, but will drive the bottom column 33 to rotate. This causes the plug-in block in the rotating sleeve 39 to slide in the slide groove 34 until it slides to the bottom of the limiting groove. At this time, after the storage chamber 37 is reset by the return spring, the plug-in block in the rotating sleeve 39 will be inserted into the limiting groove, preventing it from rising and performing a locking operation.

[0037] In this embodiment, as Figure 1 , Figure 2 and Figure 7As shown, the holding mechanism 4 includes a holding chamber 41 and a holding trough 42. The holding chamber 41 is located at the top of the operating table 1 and is connected to the installation chamber. The inner diameter of the holding chamber 41 matches the outer diameter of the shielding plate 382. The holding trough 42 is located on the bottom wall of the shielding plate 382. A roller is horizontally arranged on one side of the holding trough 42, and both ends of the roller are rotatably connected to the inner wall of the shielding plate 382. A shielding cloth 43 is wrapped around the outer wall of the roller. An insert 44 is fixedly connected to the front end of the shielding cloth 43. The outer wall of the insert 44 is inserted into the outer wall of the shielding cloth 43. The insert 44 on the shielding cloth 43 is manually pulled to remove it from the outer wall of the shielding plate 382. At this time, the shielding cloth 43 is collected by the roller, revealing the internal holding trough 42, which makes it convenient for staff to put various screws and other small parts into it when performing chip operations, so as to avoid loss.

[0038] In this embodiment, as Figures 1 to 7 As shown, a method for using a workbench for chip data repair is characterized by the following steps:

[0039] S1. The staff pushes down the cover plate 382, ​​causing the cover plate 382 to rotate downward under force, while squeezing the storage compartment 37 in the placement compartment 31, causing the storage compartment 37 to move downward. The storage compartment 37 slides downward through the slide rod, squeezing the return spring.

[0040] S2. Next, as the storage compartment 37 moves downward, the rotating column 35 located below the storage compartment 37 drives the rotating sleeve 39 to move downward and enter the slide groove 34 through the removal groove. Then, due to the threaded fit between the rotating column 35 and the bottom column 33, and the symmetrical arrangement of the internal structure of the second drive compartment 36 and the internal structure of the first drive compartment 32, the rotating column 35 will not rotate itself when it moves downward, but will drive the bottom column 33 to rotate, causing the plug in the rotating sleeve 39 to slide in the slide groove 34 until it slides to the bottom of the limiting groove. At this time, after the storage compartment 37 is reset by the return spring, the plug in the rotating sleeve 39 will insert into the limiting groove, preventing it from rising and performing a locking operation.

[0041] S3. Similarly, when the staff presses the cover plate 382 again, the bottom of the cover plate 382 triggers the storage compartment 37 to move down again. At this time, because several limiting slots and several removal slots are distributed alternately at the top of the slide groove 34, the plug-in block on the rotating sleeve 39 moves out of the groove. At this time, the storage compartment 37 is reset and rises by the reset spring, and the plug-in block rises by moving out of the groove until the trigger block 384 on the storage compartment 37 squeezes the limiting block 381 to contract, so that the cover plate 382 and the storage compartment 37 rise and open at the same time.

[0042] S4. Then, since the end of the shielding plate 382 is fixed with a coil spring, the shielding plate 382 will automatically open after the locking of the limiting block 381 is released, until it is rotated and inserted into the holding compartment 41 for placement.

[0043] S5. Finally, manually pull the insert 44 on the shielding cloth 43 to remove it from the outer wall of the shielding plate 382. At this time, the shielding cloth 43 is collected by the roller, revealing the internal holding slot 42, which makes it convenient for staff to put various screws and other small parts into it when performing chip operations, so as to avoid loss.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A workbench for chip data repair, comprising an operating table (1), characterized in that: The bottom four sides of the operating table (1) are fixedly connected with support legs (2), the inner wall of the operating table (1) is provided with a placement mechanism (3), and the top of the operating table (1) is provided with a holding mechanism (4). The placement mechanism (3) includes a placement compartment (31), a base column (33), a rotating column (35), and an unfolding component (38). The placement compartment (31) is located at the top of the operating table (1). A first drive compartment (32) is fixedly connected to the bottom wall of the placement compartment (31). A limiting gear is rotatably connected to the inner wall of the first drive compartment (32), and an arc-shaped block is inserted into the outer teeth of the limiting gear. The outer wall of the arc-shaped block is elastically connected to the inner wall of the first drive compartment (32). The bottom end of the base column (33) is connected to the limiting gear. The top is fixedly connected, and a sliding groove (34) is provided in the inner wall of the bottom column (33). One end of the sliding groove (34) is connected to a limiting groove, and the other end of the sliding groove (34) is connected to a removal groove. The outer wall of the rotating column (35) is threadedly engaged with the inner wall of the bottom column (33). The top of the rotating column (35) is rotatably connected to a second drive chamber (36), and the top of the second drive chamber (36) is fixedly connected to a storage chamber (37). The unfolding member (38) is movably disposed on the inner wall of the placement chamber (31). The unfolding component (38) includes a limiting block (381), a shielding plate (382), and a trigger block (384). The outer wall of the limiting block (381) is slidably disposed with the inner wall of the placement compartment (31), and a return spring is fixedly connected to the rear end of the limiting block (381). The two ends of the shielding plate (382) are hinged to the inner walls of the two sides of the placement compartment (31). A coil spring is fixedly connected to the shaft end of the shielding plate (382). A locking rod (383) is fixedly connected to the outer wall of the shielding plate (382). The bottom end of the locking rod (383) has a bevel formed by machining. The outer wall of the trigger block (384) is fixedly connected to the outer wall of the storage compartment (37). The side view section of the trigger block (384) is a trapezoidal structure. The holding mechanism (4) includes a holding chamber (41) and a holding trough (42). The holding chamber (41) is located at the top of the operating table (1) and is connected to the installation chamber. The inner diameter of the holding chamber (41) matches the outer diameter of the shielding plate (382). The holding trough (42) is located on the bottom wall of the shielding plate (382). A roller is horizontally arranged on one side of the holding trough (42), and both ends of the roller are rotatably connected to the inner wall of the shielding plate (382). A shielding cloth (43) is wrapped around the outer wall of the roller. An insert (44) is fixedly connected to the front end of the shielding cloth (43). The outer wall of the insert (44) is inserted into the outer wall of the shielding cloth (43).

2. The workbench for chip data repair according to claim 1, characterized in that: The limiting groove and the removal groove in the slide (34) are distributed in a circular array at equal intervals along the wall of the slide (34), and the limiting groove and the removal groove are distributed alternately at the top of the slide (34), and the limiting groove and the removal groove are all connected to the slide (34).

3. A workbench for chip data repair according to claim 1, characterized in that: The internal structure of the second drive compartment (36) is symmetrical to the internal structure of the first drive compartment (32), and the arc-shaped orientation of the arc block in the second drive compartment (36) is opposite to the orientation of the arc block in the first drive compartment (32).

4. A workbench for chip data repair according to claim 1, characterized in that: The storage compartment (37) has slots on both sides of its inner walls, and a sliding rod is inserted into the inner wall of the slot, and a return spring is sleeved on the outer wall of the sliding rod.

5. A workbench for chip data repair according to claim 1, characterized in that: The placement mechanism (3) also includes a rotating sleeve (39), the outer wall of which is rotatably connected to the outer wall of the rotating rod, and a plug block is fixedly connected to the side wall of the rotating sleeve (39).

6. A method of using a workbench for chip data repair, characterized in that: Includes the following steps: S1. The staff pushes down the cover plate (382), causing the cover plate (382) to rotate downward under force, while squeezing the storage compartment (37) in the placement compartment (31), causing the storage compartment (37) to move downward. The storage compartment (37) slides downward through the slide bar, squeezing the return spring. S2. Next, as the storage compartment (37) moves down, the rotating column (35) located below the storage compartment (37) drives the rotating sleeve (39) to move down and enter the slide groove (34) through the removal groove. Then, because the rotating column (35) and the bottom column (33) are threaded together, and the internal structure of the second drive compartment (36) is symmetrical with the internal structure of the first drive compartment (32), the rotating column (35) will not rotate when it moves down, and will drive the bottom column (33) to rotate, so that the plug in the rotating sleeve (39) slides in the slide groove (34) until it slides to the bottom of the limiting groove. At this time, after the storage compartment (37) is reset by the reset spring, the plug in the rotating sleeve (39) will insert into the limiting groove, so that it cannot rise and the locking operation is performed. S3. Similarly, when the staff presses the shielding plate (382) again, the bottom end of the shielding plate (382) triggers the storage compartment (37) to move down again. At this time, because several limiting slots and several removal slots are distributed alternately at the top of the slide (34), the plug-in block on the rotating sleeve (39) moves out of the slot. At this time, the storage compartment (37) is reset and rises by the reset spring, and the plug-in block rises by moving out of the slot until the trigger block (384) on the storage compartment (37) squeezes the limiting block (381) to contract, so that the shielding plate (382) and the storage compartment (37) rise and open at the same time. S4. Then, since the end of the shielding plate (382) is fixed with a coil spring, the shielding plate (382) will automatically open after the locking of the limiting block (381) is released, until it is rotated and inserted into the holding compartment (41) for placement. S5. Finally, manually pull the insert (44) on the shielding cloth (43) to remove it from the outer wall of the shielding plate (382). At this time, the shielding cloth (43) is collected by the roller and the internal holding slot (42) is exposed, so that the staff can put various screws and other small parts into it when performing chip operation to avoid loss.